210 Partitions and 22" barrels. Had 3 different 338's cut at that length.
The 210 Partition is a lot like a 130 gr 270 Win bullet... it works out of proportion to what it's "numbers" indicate.
At least in my experience.
All I ever killed with the 338 were elk, but haven't used a 338 for 15 years now.
Never found its extra recoil necessary for me or its extra punch necessary for elk...